const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost/playground', 
	{useNewUrlParser: true,  useUnifiedTopology: true})
	.then(() => console.log('数据库连接成功'))
	.catch(err => console.log(err, '数据库连接失败'))

//创建集合规则
const courseSchema = new mongoose.Schema({
	name: String,
	author: String,
	isPublished: Boolean
});

//使用规则创建集合
//1.集合名称
//2.集合规则
const Course = mongoose.model('Course', courseSchema) //courses

//创建文档
const course = new Course({
	name: 'node.js基础',
	author: '黑马讲师',
	isPublished: true
})

//将文档插入到数据库中
course.save();
